美女胸被狂揉扒开吃奶的网站o_亚洲日韩av中文无码专区_东京热激情无码专区_久久HEZYO久综合亚洲色_欧美成人高清视频_国产精品乡下勾搭老头_欧美一级v片在线播放_成人午夜国产视频_男女猛烈无遮挡免费动态图_亚洲一区国产精品视频

首頁 > 標(biāo)準(zhǔn)共享

[國外標(biāo)準(zhǔn)] UL 2556-2007 Wire and Cable Test Methods

P:2009-11-19 12:54:41

1

各位大哥:

                  現(xiàn)在急需UL2556,哪位大哥有的幫助一下啊,謝謝各位好人啦 !

         聽UL說:1581和758最終都會(huì)被2556取代,現(xiàn)在部份測(cè)試標(biāo)準(zhǔn)已經(jīng)按2556走了,所以急需了解學(xué)習(xí),望大家不要吝嗇啊!

xylene - dimethylbenzene二甲苯 (0) 投訴

P:2009-11-19 14:29:20

2

UNDERWRITERS LABORATORIES, INC.               FACTORY INSPECTION PROCEDURE

Subj.  758       Section   2        Page  2556   Issued  December 27, 1971

Vol.          This Page Effective               Revised

 

 

  Style 2556    Multi-Conductor Irradiated (Extruded, or Laminated)

                Flame-Retardant Polyethylene Insulated Flat Cable

  ---------------------------------------------------------------------------­

  Rating        60 C, no voltage assigned.

  ----------------------------------------------------------------------------

  Conductors    27 through 60, No. 33 Awg, silver coated solid copper.

  ----------------------------------------------------------------------------

  Insulation    Irradiated (extruded, or laminated) flame-retardant

                polyethylene in min. 7 mil wall.  Conductors within

                row separated min. 3 mils.  The adjacent ground

                conductors within a row may touch.  Total over-all

                thickness of cable min. 25 mils.

  ----------------------------------------------------------------------------

  Standard      Flexible Cord and Fixture Wire (Subj. No. 62).

  ----------------------------------------------------------------------------

  Instructions   Detailed examination.

       to       Dielectric Strength 900 V for 1 min. (1) between

  Inspector      adjacent conductors, (2) between conductors and

                 two metal plates.

                Insulation shall not crack when cable is flexed

                 flatwise into a U-bend around a 1/8 in. diam. mandrel.

  ----------------------------------------------------------------------------

 

  Northbrook    (4) Detailed examination.

  Counter-Check     (4) Cold bend.  Insulation shall not crack when

  Program            cable is flexed into a U-bend around a 1/2

                     in. diam. mandrel and taped into place.  The

                     cable shall be allowed to cool to minus 20 C

                     for one hour.

                (4) Age 168 hours at 100 C and subject to dielectric

                     strength test described above.

                (2) Flame test, Page 31.  One length of cable to be

                     supported flat with flame applied in center of

                     width, and another length of cable held on edge

                     with flame applied on lower edge.

  ----------------------------------------------------------------------------

  Marking       General, Page 13.

  ----------------------------------------------------------------------------

  Use           For use in protected locations in data

                processing equipment and office appliances.

 

elastic module - 彈性模數(shù) (0) 投訴

P:2009-11-19 14:31:37

3

,我還以為你要是758里的2556呢。。。

 

bps - bit/s每秒比特?cái)?shù),比特/秒(數(shù)據(jù)傳輸單位) (0) 投訴

P:2009-11-19 14:37:11

4

樓主可以到下面的帖子中進(jìn)行下載:

不過好貴呀?

樓主的威望也不夠!需要60個(gè)金幣!

http://m.jqgyxcq.com.cn/ShowPost.asp?PageIndex=2&ThreadID=31374

annular orifice - 環(huán)形?(擠塑機(jī)的) (0) 投訴

P:2009-11-20 12:25:02

5

不知道是不是最新版的哦!我才來的,以後多多關(guān)照啊

ICF - International Cableworks Federal國際電纜廠商聯(lián)盟 (0) 投訴

P:2009-11-20 15:19:32

6

最新版本的就是07版的吧!

反正我用的就是07版的!

insulation oversheath - 絕緣外套(光纖的) (0) 投訴

P:2009-12-10 15:46:01

7

vulcanised Noplane - 硫化合成橡膠 (0) 投訴

P:2009-12-10 19:46:01

8

謝謝你了,好人.

fiber-optic waveguide - 光纖波導(dǎo) (0) 投訴

P:2009-12-15 15:04:35

9

 謝謝 youxia3185

acryl - 丙烯 (0) 投訴

P:2009-12-18 20:41:40

10

賺到錢我就買...

 

SD - synthetic diamond合成鉆石,人造金剛石 (0) 投訴

P:2009-12-21 11:21:03

11

謝謝!

micronet - 微機(jī)通信網(wǎng)(計(jì)算機(jī)的) (0) 投訴

11


你需要登錄才能發(fā)表,點(diǎn)擊登錄。